soc: soundwire: Avoid bus clash during clock stop

Mask bus clash interrupt before clock stop mode to avoid
misfire of the interrupt. Clear and enable the interrupt
after clock is enabled.

Change-Id: I494073a668d298eef466c0f10ab202c3c69f9968
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>